Bowl type oil burner



y 1947. J.-G. BEHRENDT El AL 2,423,079-

BOWL TYPE on. BURNER Filed Feb. 14, 1945 Patented July 1 I947" UNITEDSTATES PATENT OFFICE 2,423,079 BOWL TYPE OIL BURNER John G. Behrendt andLouis C. Ruthy,

Chicago, 111. Application February 14, 1945, Serial No. 577,835 3Claims. (01. 158-91) ing impetus to oil vapors from the Still a furtherobject of the invention is to provide a burner with a wall slopingcontinuously downward from its outer edge ference of the riser.

Other objects of the invention are to provide improved bustion isdischarged within or directed into the for a high heat condition startsabove and outwardly of the burner extending to circular downwardlyextending portion ID of the ginal rim 6 of the bowl 5.

Extending downwardly from and tightly connected therewith is an elbow l4and a pipe l5 connecting the inlet shell and blower A fuel inlet pipe I!is inserted through the Wall of the bowl to disc arge fuel thereintonear the lowermost portion of the bowl. This pipe is ordimaintained in afree area close to the air inlet shell I 2.

Disposed at the top of the air inlet shell is a flat deflector plate H3or plate having a flat under able seat extending 26 and the height ofthe rod it in any adjusted position of the support. A burner of or baseopening 32 provided with a closure 33 through which are inserted.

With this construction,

tends, the upper end of the rod engaging a suitat the lower side of therim being varied by threading it into and out of the base and securingby a lock nut 31 threaded on the rod and engaging the upper end thiskind may be easily installed heater through an ashpit plate thecombustible mix ture produced when a'r is admitted through the inlet isforced outwardly against the outer bowl a wiping action wall and aboveit to produce which tends to cause a partial vacuum in the bowl, thecombustible mixture having a flame projecting laterally and upwardly sothat for any relatively high heat, the outer wall of the furnace, thusflame will engage the burning the fuel not in contact with the surfaceof the bowl,

but held in suspension above the bowl. Although a preferred embodimentof the invention is thus described, various other changes in theconstruction, combination, and arrangement of the several parts may bemade without departing from the spirit and scope of vention.

We claim:

the in- 1. A liquid fuel burner comprising a burner shell in the form ofa bowl having an outer marginal rim center, an air inlet shell extendingthe center of the burner shell and toward the upwardly at having a toprim flared outwardly and terminating at a point above the level of theburner forced air supply rim, a source of for the air inlet shell, acontrolled means for discharging liquid fuel into the burner shelladjacent the lowermost point at its to produce a partial vacuum duringperiods of combusbottom, and means in the burner shell tion comprising adeflector supported over and spaced from the rim of having its outerperiphery the air inlet shell and extending laterally a distancesuflicient to overlie the outwardly flared rim' of the air inlet shelland cooperating therewith to provide a circular orifice for discharge ofthe air substantially horizontally at a level above the topmost point ofthe burner shell, the outwardly beyond the inlet shell but at a pointdeflector terminating flared rim of the air substantially close theretoto permit free ascension of the combustible vapors from the bowl inresponse to created therein of partial vacuum by movement of the airstream radially and laterally over the bowl, whereby the combustion ofthe fuel vaporized within the bowl is required to proceed in major partoutside of the bowl proximate to its outer rim.

2. A liquid fuel burner comprising a burner shell in the form of a bowlhaving an outer marginal rim and inclined downwardly toward the center,an air inlet shell extending upwardly at the center of the burner shellrim terminating at a point above the burner and having a top the levelof rim, a source of air supply for the air inlet shell, a controlledmeans for discharging liquid fuel into the burner shell adjacent thelowermost point at its bottom, and mean to provacuum in the burner shellduring duce a partial periods of combustion comprising a deflectorsupported over and spaced from the rim of the air inlet shell and havingits outer periphery extenddistance sufficient to overlie the rim of theair inlet shell and cooperating therewith to provide a circular orificefor discharge of the air substantially horizontally at a level above thetopmost point of the burner shell, the deflector terminating outwardlybeyond the rim of the air inlet shell but at a point substantially closethereto to permit free ascension of the combustible vapors from the bowlin response to the condition of partial vacuum created therein bymovement of the air stream radially and laterally over the bowl, wherebythe combustion of the fuel vaporized within the bowl is required toproceed in major part outside of the bowl proximate to its outer rim.

3. A ,liquid fuel burner comprising a burner shell in the form of a bowland continuously inclined downwardly from the outer edge towards thecenter of the burner, an imperforate air inlet shell extending upwardlyat the center of the burner shell and connected at its lower end withthe shell at the bottom thereof, and having its upper end extendingabove the bowl, said burner shell and air inlet shell forming a hollowannular chamber, means for discharging liquid fuel into said chamber,and means for creating a partial vacuum in the chamber during periods ofcombustion, including a pressure source of air supply for forcing airupwardly through the air inlet shell, and a and spaced from the upperedge of the air inlet shell and projecting laterally beyond the same andalso located above the horizontal plane of the upper edge of the burnershell, said deflector and burner shell cooperating to form an annularopening for directing a layer of air under pressure over the upper edgeof the bowl for producing a wiping action thereon tending to create apartial vacuum within the bowl resulting in a mixture of air and fuelvapor and a flame projected laterally above and outwardly from the bowl.

JOHN G. BEHRENDT.

LOUIS C. RUTHY.

REFERENCES CITED Number Name Date 1,281,301 Dalcher Oct, 15, 1918 59,393Helme Nov. 6, 1866 716,121 Sievert Dec. 16, 1902 132,131 Flaherty June30, 1903 780,567 Lewis et al Jan. 24, 1905 982,167 Wright Jan. 1'7, 19111,194,106 White et al. Aug. 8, 1916 1,262,502 Japhet Apr. 9, 19181,439,041 Turner Dec. 19, 1922 1,625,320 Kenworthy Apr. 19, 19271,780,219 Barrett Nov. 4, 1930 2,065,264 Bock Dec. 22, 1936 1,529,821Wood Mar. 17, 1925 1,680,085 Breese Aug, 7, 1928 2,029,184 Paige Jan.28, 1936 2,222,854 Reynolds Nov. 26, 1940 FOREIGN PATENTS Number CountryDate 304,149 Great Britain Nov. 21, 1929

